Folding rack for solar-printing frames



(No Model.)

J. STRACHAYN.

FOLDING RACK IOR SOLAR PRINTING FRAMES.

INVENTOR: Y

ATTQRNBYS.

N, PETERS. P n'maumugnphur, wammgxom Irc4 AUNITED STATES y PATENT OFFICE.

JOSEPH STRAOHAN, OF BROOKLYN, NEW YORK.

FOLDING RACK FOR SOLAR-PRINTING FRAMES.

SPECIFICATION forming part of Letters Patent No. 366,134, dated J'uly 5, 1887. Application filed February 11, lSI. Serial No. 227,318. (No model.)

Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Folding Rack for SolarPrinting Frames, of

which the following` is a full, clear, and exact description.

This invention relates to a folding supporting frame or rack that is especially applicable for use as a support for solar-printing frames, the parts being so arranged that they may be folded to occupy a minimum amount of space when not in use, and adj usted to a proper width to support the frame to be used in con, nection therewith, and also so that they may be adjusted to extend outward in a horizontal pla-ne, or at an angle thereto.

- Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar .figures of reference indicate corresponding parts in all the views.

Figure 1 isa side view of my improved supporting rack or frame, the parts being represented as they appear when placed in position to support a printing-frame. Fig. 2 is a plan view `of the supporting-rack, the parts being represented in full lines as they appear when adjusted'for use and iu dotted lines as they,

appear when folded for storage; and Fig. 3 is a sectional end view taken on line x x of Fig. 1, the clamping attachment `being represented as it would appear when folded o'ver upon the top of the main supporting-arms.

In constructing such a rack as the one forming the subject-matter of this application, and illustrated in the drawings above referred to, I provide two main supporting-arms, 10 and 11, said arms being each formed with an upwardly-extending flange, 2. The arms 10 and 11 are united by centrally-connected rods 12, which said rods are formed with longitudinal slots 3, through which slots and the arms 10 and 11 there are passed studs or bolts 4, connection between the rods 12 being established by means of a set-screw, 5, by means of which the rods are clamped together, so as to hold the arms 10 and 11r at a proper distance to properly support the printing-frame..

To the inner ends of the arms 1() and 11 there are hinged folding strips 13, which carry eX- tensible strips14, these strips being preferably 4 frame between the danges 2.

made of sheet metal, and each leaf being provided with overhanging lugs or ears 6, within which the adjacent strip rides. The strips 14 are formed with longitudinal slots 15, through which there pass bolts 16, that are carried by the strips 18, the two sets of strips 13 and 14 being clamped together by means of winged nuts 17, that engage the bolts 16. The strips 13 are formed with lugs or ears 7, between which lugs or ears I mount forward braces, 18, said braces being pivotally connected to the lugs and arranged so that they may fold upward againstthe under side of the strip. The strips 14 are also formed with lugs or ears, as shown at 8, and between these lugs or ears I mount rear braces, 19, which are also hinged to the lugs and arranged to fold upward against the under side of the strips in connection with which they are arranged.

To the fianges 2 of the arms 10 and 1l, I pivotally connect adjustable brace-rods 20, which rods are each provided with an articulated foot, 21,.and in order that the rods may be held in any desired position to which they may be moved I provide each rod with a chain, 22, that may be caught upon a hook, 23, that is carried by its fiange 2.

To the forward ends of theanges 2, I hinge stops 24, which may be moved to the position in which they are shown in full lines in Fig. 2, or folded back to the position indicated by dotted lines in said figure; and these stops `serve to prevent the printing-'frame proper from being moved too far outward or from falling off of the supporting-rack.

Such being the general construction of my improved solar printing frame supporting raclgthe operation is as follows: The setscrew 5 is loosened and the arms 10 and 11 are moved, so as to provide for the introduction of the rIhe set-screw is then tightened to clamp the rods 12 together. The stops 24 are moved to the position shown in full lines, and the strips 13 and 14 are adjusted, as indicated in Fig. 1, so as to bring the braces 18 and 19 to a position to bear closely against the window-framev casing, the two strips 13 and 14 being at this time clamped together by turning the winged nut 17 hard down. support the rack at the desired angle, or in a The braces 2() are adjusted so as to horizontal plane, as indicated in Fig. 1, which adjustment, itwill be readily understood, may be brought about by bringing proper links ol" the chains 22 into engagement with the hooks 23, the paris being so adjusted that the printing-frame proper may be slid out upon the arms l and 1l. \Vhen ille rack is not in use, the strips 13 and let and their connections are folded over to the position in which they are shown in dotted lines in Fig. 2. The set-screw' is loosened and the two arms IO and l1 are brought together, the connection between said arms and the rods l2 being such as to permit of this collapsing.

Such a rack as the one above Adescribed is cheap, convenient, and durable, and when not in use may be adjusted so as to occupy a very sinallspace, as the parts may be folded to the positions in which they are shown in Fig. 2, and as the direct support for the printing frame may be adjusted so as to extend 'from the Window at any desired angle the printing may be carried on at all times of the day, irrespective ofthe position of the sun.

Although I have described myinvention in connection with a sola'rprinting frame, it will of course be understood that the rack could be used to support any other object which it is desired to place outside of the yvindow.

Having thus fully described myinvention, I claim as new and desire to secure by Letters Patentl. The combination, in a folding rack, of

supporting-arms, connecting-rods pivoted together and connected to the supporting-arms by a pivotal and sliding connection, and an adjustable clamping device on the inner ends of the supportingarms, substantially as herein shown and described.

2. In a Mfolding rack, the combination oi' supporting-arms provided with flanges and adjusfably connected together, braces hinged to the supporting arms, and an adjustable clamping device hinged to the inner ends oi' the supporting-arms, substantially as herein shown and described.

3. The combination, with the arms l0 and I1., formed with ilanges 2, of rods 12, formed with longitudinal slots 3 and connected to the arms and ll. by studs or bolts 4L, a set-screw arranged to connect the rods, adjustable clam ping attachments hinged to the arms, braces 20, and a means for adjusting the position of the braces, substantially as described.

l. The combination, with the arms l0 and Il, formed or provided with ilanges 2 and adjustably connected, oi braces 2O and a means for adjusting the position of the braces, strips 13, hinged'to the arms 10 and Il, strips 14, adjustably connected to the strips 13, and braces 18 and 19, carried by said strips 13 and lil, substantially as described.

JOSEPH STRACHAN.

Vitnesses:

C. BROWN ll'IcCULLoUGn, SARAH E. S'rnAcHAN. 

